For the past some time, Aarti had been observing some erratic body movement, unsteadiness and lack of coordination in the activites of her sister Radha, who also used to complain of severe headache occasionally. Aarti suggested to her parents to get a medical check-up Radha The doctor thoroughly exmined Radha and diagnosed that she has a brain tumour.
(a) What, according to you, are the values displayed by Aarti?
(b) How can radioisotope help a doctor to diagnose brain tumour?

Explanation

(a) Values displayed by Arti are:
(i) Concern towards others
(ii)Awareness about basic sciences.
(iii) Keen observation
(iv) Tendency to consult parents in important affairs.
(b) Radiosotpes can be used to identify brain tumors using imaging techniques like `P.E.T` (Positron Emission Tomography)
Tumors cells exhibit different effinity towards radioisotopes and are thus detected by the imaging technique.